Mingus could also be associated with the Hard Bop movement in jazz, another topic that we just don't have time for in this unit. Basically, "Hard" Bop musicians in the 50s and 60s took bebop and infused it with elements from other popular kinds of Black music, so there are familiar gestures from Gospel and R & B in there. (Some critics have suggested that this was sort of a mirror image to the much whiter "Cool" movement.)
So, you could check out the ferocious energy of "Better Get Hit In Your Soul," from Mingus Ah Hum 
And this is the more pensive "Fables of Faubus"
That tune actually has lyrics as well, which Mingus wrote in protest of the segregationist Governor of Arkansas, Orval Faubus.